Functional brain networks underlying idiosyncratic switching patterns in multi-stable auditory perception

Abstract

In perceptual multi-stability, perception stochastically switches between alternative interpretations of the stimulus allowing examination of perceptual experience independent of stimulus parameters. Previous studies found that listeners show temporally stable idiosyncratic switching patterns when listening to a multi-stable auditory stimulus, such as in the auditory streaming paradigm. This inter-individual variability can be described along two dimensions, Exploration and Segregation. In the current study, we explored the functional brain networks associated with these dimensions and their constituents using electroencephalography. Results showed that Segregation and its constituents are related to brain networks operating in the theta EEG band, whereas Exploration and its constituents are related to networks in the lower and upper alpha and beta bands. Thus, the dimensions on which individuals' perception differ from each other in the auditory streaming paradigm probably reflect separate perceptual processes in the human brain. Further, the results suggest that networks mainly located in left auditory areas underlie the perception of integration, whereas perceiving the alternative patterns is accompanied by stronger interhemispheric connections.

Similar but separate systems underlie perceptual bistability in vision and audition

“…The analysis reported here is based on 33 participants (25 females; 19–25 years; M age = 21.45, SD age = 1.82). The rejection rate is similar to previous studies using the same procedure 52 , 53 . For the analysis, we used the number of perceptual switches in each block and the phase durations.…”

Short-Term Effect of Auditory Stimulation on Neural Activities: A Scoping Review of Longitudinal Electroencephalography and Magnetoencephalography Studies

“…Moreover, there is a line of studies attempting to distinguish the two dimensions of segregation and exploration. Farkas, et al [110] show that exploration and segregation are linked to different functional brain networks, with the theta frequency band related to segregation and its constituents while the alpha and beta frequency bands to exploration and its constituents.…”